Power Supply Module - Mitsubishi Electric Q26UD(E)HCPU User Manual

15.3.12

Power supply module

(1) The LIFE OUT terminal has turned off (opened)
If the LIFE OUT terminal turns off at power-on or during operation of the programmable controller, check the LED
status of the power supply module.
• LED indication and module status during operation (
• Troubleshooting (
(2) The ERR. terminal has turned off (opened)
If the ERR. terminal turns off at power-on or during operation of the programmable controller, check the following
items.
The ERR. LED of the CPU module flickers.
Power of proper voltage is not supplied.
The POWER LED does not turn on in green even after the
power supply module are removed and mounted to the
normal base unit.
(Do not mount any modules other than the power supply
module.)
The internal current consumption for the entire system
exceeds the rated output current of the power supply
module.
If the ERR. terminal turns off after taking the above actions, the possible cause is a hardware failure.
Check the system operation in the order of size, the smallest system first. For the module that does not operate,
please consult your local Mitsubishi representative.
If a CPU module stop error occurs during use of two redundant power supply modules, the error is output from the ERR.
terminals of the two redundant power supply modules.
For details on the ERR. terminals, refer to the following.
• Power supply module specifications (
• Wiring to power supply module (
300
Page 277, Section 15.1)
Check item
Page 103, Section 4.8.1)
Page 219, Section 7.2.5)
Corrective action
Remove the error cause. (
Supply power of proper voltage.
The power supply module is failed.
Replace the power supply module with a normal one.
Reexamine the system configuration so that the internal
current consumption does not exceed the rated output
current.
( Page 674, Appendix 10)
Page 196, Section 7.2)
Page 282, Section 15.2)